Bump org.testcontainers:testcontainers from 1.20.1 to 1.20.3

Bumps [org.testcontainers:testcontainers](https://github.com/testcontainers/testcontainers-java) from 1.20.1 to 1.20.3.
- [Release notes](https://github.com/testcontainers/testcontainers-java/releases)
- [Changelog](https://github.com/testcontainers/testcontainers-java/blob/main/CHANGELOG.md)
- [Commits](testcontainers/testcontainers-java@1.20.1...1.20.3)

---
updated-dependencies:
- dependency-name: org.testcontainers:testcontainers
  dependency-type: direct:production
  update-type: version-update:semver-patch
...

Signed-off-by: dependabot[bot] <[email protected]>

Author: dependabot[bot]

build.gradle.kts

@@ -30,8 +30,8 @@ dependencies {
     testImplementation(kotlin("test"))
     testImplementation("org.jetbrains.kotlinx:kotlinx-coroutines-test:1.8.1")
     testImplementation("org.junit.jupiter:junit-jupiter:5.11.1")
-    testImplementation("org.testcontainers:testcontainers:1.20.1")
-    testImplementation("org.testcontainers:junit-jupiter:1.20.1")
+    testImplementation("org.testcontainers:testcontainers:1.20.3")
+    testImplementation("org.testcontainers:junit-jupiter:1.20.3")
 }
 
 tasks.test {